AB33 相差不超过k的最多数
import java.util.;

 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int k = in.nextInt();
        int[] arr = new int[n];
        for (int i = 0; i  n; i++) {
            arr[i] = in.nextInt();
        }
        Arrays.sort(arr);
        int count = 0;
        int l = 0;
        int r = 0;
        while (r  n) {
            if (arr[r]-arr[l] = k) {
                count = Math.max(r-l+1, count);
                r++;
            } else {
                l++;
            }
        }
        System.out.println(count);
    }
}